Lock.



N0.\755,195. PATENTED MAR.22,1904. H. G. VOIGHT'.

LOCK.

APPLICATION FILED DBO. 15, 1903.

N0 MODEL. 2 SHEETSSHEET 1.

/ J I C y a? mu 3 u L Ii 3 17 No. 755,195. PATENTED MAR. 22, 1904. H. G.VOIGHT.

LOCK.

APPLIUATIOR FILED no. 15, 1903.

no MODEL. 2 SHEETS-SHBET 2.

/% I I 8% ae m fifm ng I UNITED STATES Patented March 22, 1904.

PATENT OFFICE.

HENRY Gr. VOIGHT, OF NEW BRITAIN, CONNECTICUT, ASSIGNOR TO THE RUSSELL &ERWIN MANUFACTURING COMPANY, OF NEW BRITAIN, CONNECTICUT, A CORPORATIONOF CONNECTICUT.

LOCK.

SPECIFICATION forming part of Letters Patent No. 755,195, dated March22, 1904. Application filed December 15, 1903. Serial No- 185,207. (Nomodel.)

To all whom it may concern.-

Be it known that I, HENRY Gr. VOIGHT, a citizen of the United States,residing at New Britain, in the county of Hartford, State of 5Connecticut, have invented certain new and useful Improvements in Locks,of which the following is a full, clear, and exact description.

My invention relates to locks, and particu- Io larly to door-locks.

Among the objects of my invention are to simplify and reduce in'numberand cost the parts necessary to constitute a lock of that type which isfitted to a door in a notch formed in the stile thereof. The simplicityand compactness of the parts avoids the necessity of cutting away but avery slight portion of the door. The latchbolt-may be operated by eitherknob through the'medium of one roll- 2 back and a single latch-slide,both knobs being connected by a spindle so as to have dependent action.The arrangement of the parts is such that the operating mechanism islocated on one side of the door, which obviously may be the outside orinside, as desired. One side plate constitutes the lock-frame in that itsupports and guides the latch-slide. The faceplate may have an integralconnection with one of the sideplates and a slidable connection with theother side plate, so that both side plates may be moved toward or awayfrom each other to secureadjustment. I have found the construction to-besimple, economical, ef-

. fective, and durable.

In the accompanying drawings, Figure 1 is a plan View of a lock of myimproved con struction, a portion of the door being shown in section.Fig. 2 is a vertical section concentric with the axis of the door-knobs.Fig.

4 3 is a view of the inside of one of the side plates, showing theendplate and latch-bolt in elevation. Fig. 4 is a view of the inside ofthe other side plate, showing the latch-slide and roll-back inelevation. Figs. 5, 6, 7, and

8 are detail views.

A is a side plate for one side of the doorfor example, the outer side. Bis another and separate side plate for the inside of the door.

The plates A and B, I shall term ,framedles of the knobs C C.

The special means for mounting the knob C on plate A may comprise ashank which takes a long bearing in a boss or rose on the plate A, theend of the shank being screwthreaded to receive a retaining member Chaving a flanged end of head, which latter overstands the inside of theplate A to prevent the removal of the knob. The passage through theretaining'device C may correspond in shape to the passage through thespindle of the knob C. Hence when the parts are assembled and when thespindle D is inserted the same serves to key or lock the device Cagainst rotation independently of the knob-shank.

The means for securing the knob C in place maycomprise the sections C Cof a ring, which-are located inside of the plate B and project into anannular groove in the shank of the knob C. These ring-sections C may beheld in place by means of a solid ring C.

E is a latch bolt or head which in. the form shown has a pivotal bearingin an end plate F. This end plate F may be formed integrally with theplate A, and when the plates A B are in position on opposite sides of adoor the said end plate F spans or bridges the space between saidframe-plat es at the edge of the,

b 7) form a guideway to receive extensions A A on the plate A. Theextensions A A are spaced away from the end plate F a suflicientdistance to receive the inwardly-projecting extensions or ledges b b ofthe extensions B B. \Vhen assembled, the extensions B B project betweenthe extensions A in the end plate F, while the extensions A A overstandthe extensions 6 6 and stand between the walls 6 b. This interlockingarrangement provides for adjustability, yet securely holds theframe-plates A B together in perfect parallelisrn and preventsaccidental disengagement. Since doors vary in thickness ordinarily byquarters of inches, the range of adj ustability is such as toaccommodate at least two doors of different stock thicknesses. Ifdesired, the end plate F may have an extension F, which if the plates AB are moved apart to an extent substantially more than that shown inFig. 1 will cover any gap or space between the side plate and said endplate.

Gr is a latch-slide which is mounted in suitable guideways H H on theinner side of one of the frame-plates-for example, B.

G represents extensions which stand slightly above the surface of theslide G to afford bearing-shoulders with which the roll-back I mayengage. The roll-back I is suitably secured to the shank of the knob C.

G is a pin carried by the slide G, which projects through perforatedangular extensions E on the rear of the bolt E. The extension E isconnected to the bolt near its free end.

E is an angular extension projecting from the bolt near its pivotal end,and E is the boss which may be formed thereon to receive the end of aspring J, the other end of said spring resting against the inner side ofthe plate A. The function of the spring is to normally press thelatch-bolt E outwardly, so that it will stand in the position indicatedin the drawings.

K is a guard-plate the opposite edges of which may be held in undercutrecesses (see Fig. 2) on the inner side of the plate B. Thisguard-plateK serves to protect the slide and the roll-back and bypressing against said roll-back I serves as a simple and effective meansfor holding the same in position at the end of the shank of the knob C.

It will now be apparent that when thelatchslide G is retracted it willthrough the medium of the pin G retract the latch-bolt E. When thelatch-slide Gr is released, the latchbolt E will spring outwardly, thusreturning the latch-slide to its normal position. It will be seen thatthe latch may be operated by rotating either knob, since both knobs areconnected to each other.

In Fig. l the guard-plate K is removed to show the roll-back; but saidroll-back is shown in place in Fig. 2 and separately in the detachedview Fig. 8. In the plate K will be seen an opening through which thespindle D passes.

L L are screws by means of which the plates A B may be drawn firmlyagainst the sides of the door.

In fitting the latch to a door it is merely necessary to cut a smallnotch in the stile thereof sufficient to receive and allow for the playof the extensions E E of the latch-bolt. A hole is also bored throughthe door at a point in line with a spindle D,and other holes may bebored to receive the screws L L. The screws L L are preferably insertedfrom the inner side of the door.

It should be understood that locking devices may be provided in thistype of look; but since I expect to make the same the subject-matter ofanother application I have not deemed it necessary to show the sameherein.

What I claim is In a lock in combination, two separate side platesarranged to bear against opposite sides of a door at the edge thereof,two knobs arranged to rotate dependently, a face-plate carried by one ofthe said plates and arranged to overstand the edge of the door andoverlap the edge of the other side plate, an adjustable means ofconnection between said side plates near the forward edge of each and tothe rear of said face-plate, a latch-slide carried by one of the saidside plates'only, a latch bolt or head operatively connected therewith,a roll-back operatively connected with said slide and with both of saidknobs, all arranged whereby said plates may be applied to doors ofdifferent thicknesses, and the latch-bolt be operatively connected withboth knobs.

Signed at New Britain, Connecticut, this 10th day of December, 1903.

HENRY G. VOIGHI.

